Researchers investigate how spontaneous headshake after a kinematic event (SHAAKE) may be a novel sign to diagnose concussion.
By Dr. Priyom Bose, Ph.D.Reviewed by Benedette Cuffari, M.Sc.Oct 28 2024 Nearly three-quarters of athletes reported a spontaneous headshake after a kinematic event following a self-reported concussion.
Importance of concussion diagnosis Concussions are mild brain injuries that affect brain function. Several studies have indicated that both undiagnosed traumatic brain injuries and delayed concussion diagnoses increase recovery time and the risk of subsequent neurologic and orthopedic injury. Common visual signs of suspected concussions include ‘slow to get up,’ ‘loss of responsiveness,’ and ‘blank and vacant look.’ SHAAKE, which refers to players shaking their heads back and forth for seconds to minutes after a collision, has also been frequently observed in concussion cases.
Related StoriesIndividuals who played sports at any level and were 30 years of age or younger were considered for the current study. Younger athletes were recruited in the survey because of the increased possibility of receiving formal concussion education under existing policies. Those who remembered making these motions were given an additional list of thirteen reasons for why they believed that the SHAAKE occurred, such as changes in vision, auditory changes, and dizziness, as well as symptoms not associated with the concussion including scalp pain and feeling of chills. Study participants were also asked to provide suggestions as to why they made the head movement after the collision.
About 92% of the study participants were White, whereas 79.3% were from North America. Over 98% of the study cohort experienced at least one concussion based on the modern definition, with 68.9% reporting rapidly shaking their head after the collision.
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